Dataset on Green Synthesis and Analytical Performance Data of Silver Nanoparticles from Pomegranate Peel Extract for Mercury (II) Detection in Skin Whitening Creams
Description
The dataset was generated during the preparation and analytical application of plant-mediated silver nanoparticles for mercury (II) ion monitoring in cosmetic cream matrices. Data collection was carried out under controlled laboratory conditions using UV–Vis spectrophotometry, particle size analysis, and zeta potential measurements. The dataset includes wavelength–absorbance values, calibration measurements across defined mercury concentration ranges, optimization data (pH, reaction time, and reagent volume ratios), selectivity measurements in the presence of other metal ions, and recovery data from fortified cosmetic samples. Limit of detection (LOD) and limit of quantification (LOQ) values were calculated using regression slope and blank standard deviation according to standard analytical equations. Absorbance values were recorded at defined wavelengths after fixed reaction times. Calibration data are presented as concentration vs absorbance pairs to allow independent regression analysis. Optimization datasets contain condition–response tables enabling comparison across experimental variables. Recovery datasets include spiked concentration levels and corresponding calculated recovery percentages. The files are organized to allow reuse for regression modeling, validation exercises, comparative assessment of nanoparticle-based sensing configurations, and statistical reanalysis of analytical performance parameters
Files
Steps to reproduce
The data were generated through laboratory-based preparation and analytical measurements of plant-mediated silver nanoparticles and their interaction with mercury (II) ions in cosmetic cream matrices. Preparation of Pomegranate Peel Extract Dried pomegranate peel powder was mixed with deionized water and heated under controlled temperature with continuous stirring for a fixed period. The mixture was filtered using Whatman filter paper to obtain a clear aqueous extract. The extract was stored at 4 °C prior to use. Preparation of Silver Nanoparticles An aqueous silver nitrate (AgNO₃) solution was mixed with the plant extract at defined volume ratios. Reaction parameters including precursor concentration, pH, and reaction time were controlled and recorded. pH adjustments were performed using dilute NaOH or HNO₃ solutions. The reaction mixture was maintained at room temperature. Preparation of Mercury Standard Solutions A certified mercury (II) stock solution was diluted with deionized water to prepare working standards across the required concentration range. Serial dilution was performed using volumetric glassware. Cosmetic Sample Preparation Approximately a defined mass of cosmetic cream sample was weighed and transferred into a digestion vessel. Concentrated nitric acid (HNO₃) was added, and the mixture was heated until a clear solution was obtained. After cooling, the digest was diluted with deionized water to a known volume. The pH of the solution was adjusted to near neutral prior to measurement. Aliquots of the prepared sample solution were mixed with nanoparticle dispersion under fixed reaction conditions before absorbance measurement. Instrumental Measurements UV–Vis spectra were recorded using a Shimadzu UV-1800 spectrophotometer (300–700 nm range) with 1 cm quartz cuvettes. Particle size and zeta potential were measured using a Malvern Zetasizer Nano series instrument. Calibration curves were generated using concentration–absorbance pairs. LOD and LOQ were calculated using: LOD = 3σ / S LOQ = 10σ / S where σ is the standard deviation of blank measurements and S is the slope of the calibration curve. All calculations and regression analyses were performed using Microsoft Excel built-in functions.
Institutions
- University of BrawijayaEast Java, Malang